LTM2881CV-5 - Isolated RS485/RS422 μModule Transceiver

The LTM2881CV-5 is a complete galvanically isolated RS485/RS422 transceiver from Linear Technology, designed to provide robust communication in noisy environments and over long distances. It is a member of Linear Technology's μModule (micro module) family and features an integrated isolation barrier to ensure that the data and ground on the bus side of the transceiver are completely isolated from the logic side. This is particularly beneficial in preventing ground loops and in protecting against large common mode voltage variations.

This transceiver operates from a single 5V supply and includes an integrated, isolated DC/DC converter, which powers the isolation barrier and the transceiver. This feature simplifies the design process as there is no need for a separate isolated power supply. The LTM2881CV-5 supports data rates up to 20Mbps, making it suitable for high-speed communication applications.

The device features ±15kV ESD protection on the transceiver input and output pins, providing enhanced robustness and reliability in industrial environments where electrical noise or transient voltages could be a concern. In addition, with its integrated transformer driver and low EMI switching edges, the LTM2881CV-5 ensures reduced radiation and improved data integrity.

The module comes in a compact, surface-mount LGA package that is designed for space-constrained applications. Its small footprint allows it to be easily integrated into a variety of systems without significantly impacting the overall size of the design.

Key features of the LTM2881CV-5 include:

• Integrated signal and power isolation
• Single 5V supply operation
• Up to 20Mbps data rate for RS485/RS422 communication
• ±15kV ESD protection on transceiver input/output pins
• Integrated DC/DC converter
• Low electromagnetic interference (EMI)
• Compact LGA package for space-saving designs

The LTM2881CV-5 is ideal for industrial control systems, networked devices in electrically noisy environments, and any application requiring reliable data transmission with electrical isolation. Its robust feature set ensures that it can handle the demands of critical communication systems while maintaining data integrity and protecting against common electrical issues.